Perhaps already in the first weeks of 2015 we may know the identity of the skeleton found buried beneath a massive mound at Amphipolis in northern Greece.

About a third of a mile in circumference, this is Greece's largest tomb and dates back to Alexander the Great's reign in the late fourth century B.C.

The discovery of the human remains came at the end of an extraordinary archaeological exploration that winded through huge decapitated sphinxes, walls guarded by colossal female statues and floors decorated with stunning mosaics.

But archaeologists may do more than revealing who is buried in the mysterious mound. A new geophysical scan of the Kasta Hill, as the Amphipolis mound is known, has identified four areas of "especially high electrical resistance" beneath the massive monument, suggesting that further structures may lie beneath.

Excavation around the new "hot spots" will possibly begin in the summer and new findings might add to the archaeological wonders unearthed in the tomb in the past five months.

But this mysterious Greek tomb is just one of a handful of promising finds that will likely offer surprises in 2015.

Considered the holy grail of aviation archaeology, the search for Amelia Earhart has kept the world guessing ever since the tall, slender, blonde pilot took her last flight off into legend on July 2, 1937.

On Oct. 28, 2014, Ric Gillespie, executive director at The International Group for Historic Aircraft Recovery (TIGHAR), announced that a piece of aircraft debris found by his team on Nikumaroro, an uninhabited atoll in the southwestern Pacific republic of Kiribati is, with a high degree of certainty, the first physical evidence of Earhart's plane.

The breakthrough would prove that, contrary to what was generally believed, Earhart and her navigator, Fred Noonan, did not crash in the Pacific Ocean, running out of fuel somewhere near their target destination of Howland Island in a record attempt to fly around the world at the equator.

Instead, they made a forced landing on the smooth, flat coral reef of Nikumaroro.The two became castaways and eventually died on the atoll, which is some 350 miles southeast of Howland Island.

Where the elusive aircraft ended up is a mystery Gillespie will try to solve in summer 2015, when he embarks on a new Nikumaroro expedition to verify whether a sonar anomaly captured off Nikumaroro in 2012 is indeed the wrecked aircraft.

"We seem to have a piece of the Electra. We want, and the world wants, the rest of the airplane," Gillespie told Discovery News.

A diver discovers an intact ceramic table jug and a bronze rigging ring on the Antikythera shipwreck.

A treasure trove of artifacts might be recovered in summer 2015 from one of the richest shipwrecks of antiquity. Dubbed the "Titanic of the ancient world," the vessel sank more than 2,000 years ago off the remote island of Antikythera, in southern Greece.

The wreck, believed to have been a Roman commercial vessel that was carrying a luxury cargo of Greek treasures from the coast of Asia Minor west to Rome, was found by Greek sponge divers more than 100 years ago. At that time the divers retrieved a treasure hoard which included bronze and marble statues, jewelry, furniture and the mysterious "Antikythera mechanism" -- a complex, geared astronomical calculator known as the world's oldest computer.

But the wreck might hold more wonders.

In 2014 a project of the Greek Ministry of Culture and the Woods Hole Oceanographic Institution, known as "Return to Antikythera" has allowed divers to return to the treacherous wreck site, 180 feet down a steep underwater slope, using a state-of-the-art exosuit that acts like a wearable submarine.

The team created a a high-resolution, 3-D map of the site which will help excavating the wreck in the summer 2015. Indeed, the researchers discovered that artifacts are scattered over a large area, covering 984 feet (300 meters) of the seafloor.

More findings are expected to come from the construction of the Femern Belt link, an immersed tunnel that will connect the German island of Fehmarn with the Danish island of Lolland.

In the past months the excavation work at the site has yielded 5,000-year-old footprints alongside a system of fishing weirs, revealing how Stone Age people made strenuous attempts to cope with the destructive forces of the sea.

The footprints suggest that at least two people stepped out into the swampy seabed to save whatever they could of their fishing system before it was flooded and covered in sand.

Archaeologists also unearthed a 5,500-year-old axe with the handle still attached. The axe was found stuck 12 inches down into the seabed, along with other artifacts which include a paddle, two bows and some 14 axe shafts.

Intriguingly, the artifacts were purposely placed vertically into the earth, suggesting they were part of a ritual deposit.

Excavation at the site is ongoing. Archaeologists from Museum Lolland-Falster expect to find more artifacts in 2015 and new clues about Stone Age life in the area.

The year 2015 will be a year to remember for the King Richard III project, although the focus won't be a on digging.

Depicted by William Shakespeare as a bloodthirsty usurper, Richard III was lost to history until 2012, when his twisted skeleton was found buried beneath a parking lot in the English city of Leicester.

The remains of the medieval king, who ruled England from 1483 until his death in 1485 in the Battle of Bosworth, have been extensively analyzed. The conflict was the last act of the decades-long fight over the throne known as War of the Roses.

Mitochondrial DNA showed a match between Richard and two of his living relatives, confirming the bones are indeed those of the king. Further analysis shed light on his diet and disease, and even provided a blow-by-blow account his final moments.

In 2015 the curtain will finally come down on the last Plantagenet king. King Richard III will be finally reburied in Leicester Cathedral on March 26 at the end of a seven-day program of events in Leicester and Leicestershire to honor him.